/* RHK V4 — based on approved visual direction */
:root{--ink:#171817;--paper:#f5f4f0;--soft:#eceae4;--line:rgba(20,20,20,.14);--white:#fff}
.rhk-v4-home{background:var(--paper);color:var(--ink)}
.rhk-header{position:fixed;z-index:10000;top:0;left:0;width:100%;height:86px;background:rgba(10,10,10,.34);border-bottom:1px solid rgba(255,255,255,.15);backdrop-filter:blur(12px);transition:.35s}
.rhk-header.scrolled{height:72px;background:rgba(13,13,13,.92)}
.rhk-navrow{height:86px;display:flex;align-items:center;justify-content:space-between;transition:.35s}.scrolled .rhk-navrow{height:72px}
.rhk-logo a{display:flex;align-items:center;gap:12px;color:#fff}.rhk-logo img{max-width:158px;max-height:52px;object-fit:contain}.rhk-logo span{font-size:9px;letter-spacing:.18em;opacity:.68}
.rhk-menu{height:100%;display:flex;align-items:center;gap:34px}.rhk-menu>a,.rhk-has-sub>a{position:relative;display:flex;flex-direction:column;gap:5px;color:#fff;font-size:14px;font-weight:400;letter-spacing:.08em}.rhk-menu a span{font-size:8px;letter-spacing:.16em;opacity:.45}.rhk-menu>a:after,.rhk-has-sub>a:after{content:"";position:absolute;left:0;bottom:-18px;width:0;height:1px;background:#fff;transition:.3s}.rhk-menu>a:hover:after,.rhk-has-sub:hover>a:after{width:100%}
.rhk-has-sub{position:relative}.rhk-submenu{position:absolute;top:38px;left:-22px;width:210px;padding:14px 0;background:rgba(15,15,15,.94);opacity:0;visibility:hidden;transform:translateY(8px);transition:.25s;border:1px solid rgba(255,255,255,.10)}.rhk-has-sub:hover .rhk-submenu{opacity:1;visibility:visible;transform:none}.rhk-submenu a{display:block;padding:13px 20px;color:#fff;font-size:13px}.rhk-submenu em{display:block;margin-top:3px;font-style:normal;font-size:8px;letter-spacing:.14em;opacity:.45}
.rhk-hero{position:relative;height:100vh;min-height:680px;color:#fff;overflow:hidden}.rhk-hero-slides,.rhk-hero-shade{position:absolute;inset:0}.rhk-hero-slides{overflow:hidden}.rhk-hero-bg{position:absolute;inset:0;background-position:center;background-size:cover;opacity:0;transform:scale(1.015);animation:rhkSlide 24s infinite}.rhk-hero-bg:nth-child(1){animation-delay:0s}.rhk-hero-bg:nth-child(2){animation-delay:6s}.rhk-hero-bg:nth-child(3){animation-delay:12s}.rhk-hero-bg:nth-child(4){animation-delay:18s}.rhk-hero-bg:only-child{opacity:1;animation:rhkHero 14s ease-out forwards}.rhk-hero-shade{background:linear-gradient(90deg,rgba(7,7,7,.72) 0,rgba(7,7,7,.34) 41%,rgba(7,7,7,.05) 70%),linear-gradient(180deg,rgba(0,0,0,.18),transparent 55%,rgba(0,0,0,.32))}@keyframes rhkHero{to{transform:scale(1.055)}}@keyframes rhkSlide{0%{opacity:0;transform:scale(1.015)}5%{opacity:1}25%{opacity:1;transform:scale(1.055)}30%{opacity:0}100%{opacity:0}}
.rhk-hero-inner{position:relative;height:100%;display:flex;align-items:center}.rhk-hero-copy{max-width:610px;margin-top:42px}.rhk-eyebrow,.rhk-section-kicker{font-size:10px;letter-spacing:.24em;text-transform:uppercase}.rhk-eyebrow{margin-bottom:26px;color:rgba(255,255,255,.62)}.rhk-hero h1{margin:0;font-size:clamp(44px,5.1vw,78px);font-weight:300;letter-spacing:.04em}.rhk-hero h2{margin:20px 0 22px;font-size:clamp(23px,2.2vw,34px);font-weight:300;letter-spacing:.08em}.rhk-hero p{max-width:480px;margin:0 0 36px;font-size:15px;line-height:2;color:rgba(255,255,255,.72)}.rhk-outline-btn{display:inline-flex;align-items:center;justify-content:space-between;width:178px;padding:15px 18px;border:1px solid rgba(255,255,255,.48);color:#fff;font-size:12px;letter-spacing:.1em;transition:.3s}.rhk-outline-btn:hover{background:#fff;color:#111}.rhk-scroll{position:absolute;left:4vw;bottom:28px;font-size:8px;letter-spacing:.18em;color:rgba(255,255,255,.6)}.rhk-scroll i{display:inline-block;width:70px;height:1px;margin-left:12px;background:rgba(255,255,255,.4);vertical-align:middle}
.rhk-section{padding:110px 0}.rhk-intro{background:#f7f6f2}.rhk-intro-grid{display:grid;grid-template-columns:.55fr 1.15fr 1.2fr 1.3fr;gap:50px;align-items:end}.rhk-section-kicker{color:#99988f}.rhk-intro-title h2,.rhk-section-head h2,.rhk-aesthetic-copy h2,.rhk-about-grid h2{font-size:clamp(34px,3vw,50px);font-weight:300;letter-spacing:.05em;margin:0 0 8px}.rhk-intro-title p{margin:0;font-size:10px;letter-spacing:.2em;color:#999}.rhk-intro-text{font-size:14px;line-height:2;color:#666}.rhk-values{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}.rhk-values span{padding-top:22px;border-top:1px solid var(--line)}.rhk-values b{display:block;font-size:18px;font-weight:400}.rhk-values small{font-size:8px;letter-spacing:.14em;color:#999}
.rhk-products{background:#111}.rhk-product-grid{display:grid;grid-template-columns:repeat(7,1fr);min-height:410px}.rhk-product-card{position:relative;min-height:410px;background-position:center;background-size:cover;overflow:hidden;border-right:1px solid rgba(255,255,255,.15);color:#fff}.rhk-card-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.68));transition:.45s}.rhk-product-card:hover .rhk-card-mask{background:linear-gradient(180deg,rgba(0,0,0,.12),rgba(0,0,0,.50))}.rhk-product-no{position:absolute;top:24px;left:22px;font-size:9px;letter-spacing:.16em;opacity:.55}.rhk-product-name{position:absolute;left:22px;right:18px;bottom:42px;font-size:18px;font-weight:300;letter-spacing:.06em}.rhk-product-name small{display:block;margin-top:7px;font-size:8px;letter-spacing:.12em;font-weight:400;opacity:.63}.rhk-card-arrow{position:absolute;left:22px;bottom:18px;font-size:16px;transition:.3s}.rhk-product-card:hover .rhk-card-arrow{transform:translateX(7px)}
.rhk-projects{background:var(--paper)}.rhk-section-head{display:flex;align-items:end;justify-content:space-between;margin-bottom:46px}.rhk-section-head h2{margin-top:14px}.rhk-section-head p{margin:0;color:#888;font-size:12px}.rhk-text-link{display:inline-flex;gap:20px;align-items:center;color:#222;font-size:11px;letter-spacing:.08em;border-bottom:1px solid #222;padding-bottom:6px}.rhk-project-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}.rhk-project-img{aspect-ratio:1.28/1;overflow:hidden;background:#ddd}.rhk-project-img img{width:100%;height:100%;object-fit:cover;transition:.65s}.rhk-project-card:hover img{transform:scale(1.045)}.rhk-project-meta{padding:16px 2px}.rhk-project-meta h3{margin:0 0 7px;font-size:14px;font-weight:400;line-height:1.5;color:#222}.rhk-project-meta p{margin:0;font-size:10px;color:#999;letter-spacing:.05em}
.rhk-aesthetic{background:#151615;color:#fff}.rhk-aesthetic-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:7vw;align-items:center}.rhk-aesthetic-image{height:590px;overflow:hidden}.rhk-aesthetic-image img{width:100%;height:100%;object-fit:cover}.rhk-aesthetic-copy h2{margin:18px 0 28px}.rhk-aesthetic-copy .rhk-lead{font-size:21px;line-height:1.8;color:#fff}.rhk-aesthetic-copy p{max-width:460px;font-size:14px;line-height:2;color:rgba(255,255,255,.58)}.rhk-aesthetic .rhk-text-link{margin-top:24px;color:#fff;border-color:rgba(255,255,255,.5)}
.rhk-about-strip{background:#e9e7e0}.rhk-about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:9vw}.rhk-about-grid h2{margin-top:14px}.rhk-about-copy>p{max-width:620px;font-size:18px;line-height:1.9;font-weight:300}.rhk-about-links{margin-top:44px;border-top:1px solid var(--line)}.rhk-about-links a{display:flex;justify-content:space-between;padding:18px 0;border-bottom:1px solid var(--line);color:#222;font-size:13px}.rhk-about-links a:hover{padding-left:8px}
.rhk-mobile-menu{position:fixed;z-index:9999;inset:0;background:#111;padding:104px 26px 30px;opacity:0;visibility:hidden;transition:.3s}.rhk-mobile-menu.open{opacity:1;visibility:visible}.rhk-mobile-inner>a,.rhk-mobile-sub a{display:block;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.12);color:#fff;font-size:18px}.rhk-mobile-inner small{display:block;margin-top:4px;font-size:8px;letter-spacing:.15em;opacity:.45}.rhk-mobile-sub{padding-left:18px}.rhk-menu-btn{width:28px;height:22px;position:relative;z-index:10001}.rhk-menu-btn i{display:block;height:1px;background:#fff;margin:6px 0;transition:.3s}.rhk-menu-btn.on i:nth-child(1){transform:translateY(7px) rotate(45deg)}.rhk-menu-btn.on i:nth-child(2){opacity:0}.rhk-menu-btn.on i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
/* prevent legacy homepage fixed/banner behavior from V3 */
.rhk-v4-home .content{margin-top:0}.rhk-v4-home footer{position:relative;z-index:2}
@media(max-width:1199px){.rhk-menu{gap:22px}.rhk-product-grid{grid-template-columns:repeat(4,1fr)}.rhk-product-card{min-height:350px}.rhk-project-grid{grid-template-columns:repeat(3,1fr)}.rhk-intro-grid{grid-template-columns:1fr 1fr}.rhk-values{grid-column:2}}
@media(max-width:991px){.rhk-header,.rhk-navrow{height:70px}.rhk-logo img{max-width:132px}.rhk-hero{min-height:620px}.rhk-section{padding:82px 0}.rhk-product-grid{grid-template-columns:repeat(2,1fr)}.rhk-product-card{min-height:390px}.rhk-project-grid{grid-template-columns:repeat(2,1fr)}.rhk-aesthetic-grid{grid-template-columns:1fr;gap:42px}.rhk-aesthetic-image{height:500px}.rhk-intro-grid{grid-template-columns:1fr}.rhk-values{grid-column:auto}.rhk-about-grid{grid-template-columns:1fr}}
@media(max-width:600px){.container-fluid{padding-left:20px!important;padding-right:20px!important}.rhk-hero{height:86vh;min-height:580px}.rhk-hero-copy{margin-top:20px}.rhk-hero h1{font-size:42px}.rhk-hero h2{font-size:23px}.rhk-hero p{font-size:13px;line-height:1.8}.rhk-section{padding:66px 0}.rhk-values{grid-template-columns:repeat(2,1fr)}.rhk-product-card{min-height:285px}.rhk-product-name{font-size:16px}.rhk-project-grid{grid-template-columns:1fr}.rhk-section-head{align-items:flex-start;gap:25px;flex-direction:column}.rhk-aesthetic-image{height:360px}.rhk-about-copy>p{font-size:16px}}
.rhk-footer-cta{padding:78px 0;background:#0e0f0e;color:#fff}.rhk-footer-cta-grid{display:grid;grid-template-columns:1fr 1.4fr;gap:8vw;align-items:end}.rhk-footer-cta span{font-size:9px;letter-spacing:.22em;color:rgba(255,255,255,.48)}.rhk-footer-cta h2{font-weight:300;font-size:clamp(28px,3vw,48px);margin:16px 0 0}.rhk-footer-nav{display:grid;grid-template-columns:repeat(5,1fr);gap:18px}.rhk-footer-nav a{padding-top:15px;border-top:1px solid rgba(255,255,255,.16);color:#fff;font-size:12px}.rhk-footer-nav small{display:block;margin-top:5px;font-size:7px;letter-spacing:.12em;opacity:.42}.rhk-footer{padding:24px 0!important;background:#090a09!important}.rhk-footer-bottom{display:flex;justify-content:space-between;gap:20px;color:rgba(255,255,255,.42);font-size:9px;letter-spacing:.08em}.rhk-footer-bottom span:last-child{letter-spacing:.18em}
@media(max-width:991px){.rhk-footer-cta-grid{grid-template-columns:1fr;gap:40px}.rhk-footer-nav{grid-template-columns:repeat(2,1fr)}}@media(max-width:600px){.rhk-footer-nav{grid-template-columns:1fr}.rhk-footer-bottom{flex-direction:column}}
/* V4.3 partners */
.rhk-partners{background:#f7f6f2;border-top:1px solid var(--line)}
.rhk-partner-grid{display:grid;grid-template-columns:repeat(7,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.rhk-partner-card{min-height:126px;padding:24px 18px;display:flex;align-items:center;justify-content:center;position:relative;background:#fff;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.rhk-partner-card img{display:block;max-width:100%;max-height:62px;width:auto;height:auto;object-fit:contain;filter:grayscale(1);opacity:.78;transition:.3s}
.rhk-partner-card span{display:none}.rhk-partner-card:hover img{filter:none;opacity:1;transform:scale(1.03)}
@media(max-width:1199px){.rhk-partner-grid{grid-template-columns:repeat(4,1fr)}}
@media(max-width:767px){.rhk-partner-grid{grid-template-columns:repeat(2,1fr)}.rhk-partner-card{min-height:100px}}